#0186B2
Closest named color: Blue NCS (#118AB2). oklch(58.1% 0.116 230.4), rgb(1, 134, 178).
Aa
Black text reads best on this color (5.05:1).
About this color
#0186B2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.116 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.013 away. Black text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #0186B2 |
| RGB | rgb(1, 134, 178) |
| HSL | hsl(195, 99%, 35%) |
| OKLCH | oklch(58.1% 0.116 230.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #0186B2 | 4.15:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #0186B2 | 5.05:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #0186B2 text on white | 4.15:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #0186B2 text on black | 5.05:1 | AA | Lc -33.7 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C7DDE9
oklch(88.5% 0.029 231.5)
-
Step 300
300
#9FC8DC
oklch(81% 0.052 229.2)
-
Step 400
400
#67AACB
oklch(70.6% 0.084 231)
-
Step 500
500
#3595BE
oklch(63.2% 0.107 230.4)
-
Step 600
600 (this color)
#0186B2
oklch(58.1% 0.116 230.4)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900
#0C485F
oklch(37.7% 0.069 229.7)
-
Step 950
950
#0B2A38
oklch(27% 0.044 231.3)
#0186B2 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #6F84B4 | 0.078 |
| Deuteranopia (no green cones) | #5B76B1 | 0.066 |
| Tritanopia (no blue cones) | #009295 | 0.066 |
| Achromatopsia (no color) | #7C7C7C | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0186B2
#0186B2
oklch(58.1% 0.116 230.4)
- #B06435
#B06435
oklch(58.1% 0.116 50.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #0186B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.013
- Teal Blue #01889F ΔE 0.032
- Steel Blue #4682B4 ΔE 0.034
- Nice Blue #107AB0 ΔE 0.034
- Cool Blue #4984B8 ΔE 0.038
- Water Blue #0E87CC ΔE 0.041
- Cerulean #457B9D ΔE 0.045
- Off Blue #5684AE ΔE 0.047
Use #0186B2 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.